An air conditioning pipe with an integrated expansion valve

Abstract

The application relates to the technical field of automobile air conditioner pipes, in particular to an air conditioner pipe integrated with an expansion valve, which comprises an electromagnetic expansion valve, a high-pressure pipe, a low-pressure pipe and a first flange, the high-pressure pipe comprises a first high-pressure pipe, an outer sleeve pipe, a second high-pressure pipe, a third high-pressure pipe, a first high-pressure rubber pipe, a fourth high-pressure pipe and a second high-pressure rubber pipe, the low-pressure pipe comprises a first low-pressure pipe, a second low-pressure pipe, a first low-pressure rubber pipe, a third low-pressure pipe and a second low-pressure rubber pipe, the outer sleeve pipe is arranged outside the first low-pressure pipe, the outer sleeve pipe is communicated with the first high-pressure pipe and the second high-pressure pipe, the third high-pressure pipe is communicated with the second high-pressure pipe, and the first high-pressure rubber pipe is communicated with the second high-pressure pipe and the fourth high-pressure pipe; the first flange is connected with the third high-pressure pipe and the second low-pressure pipe; the electromagnetic expansion valve is communicated with the fourth high-pressure pipe, the third low-pressure pipe, the second high-pressure rubber pipe and the second low-pressure rubber pipe, and the outer sleeve pipe is arranged outside the first low-pressure pipe, thereby realizing the advantage of smaller local installation size.

Description

Technical Field

[0001] This application relates to the field of automotive air conditioning pipe technology, and more specifically to an air conditioning pipe with an integrated expansion valve. Background Technology

[0002] The function of automotive air conditioning is to cool, heat, ventilate, and purify the air inside the vehicle, providing a comfortable riding environment for passengers. The refrigerant piping, the channel through which the refrigerant circulates, connects key components such as the compressor, condenser, and evaporator in series to form a closed loop. This allows the refrigerant to absorb heat from the vehicle's interior and release it outside during a "compression-condensation-throttling-evaporation" cycle, achieving the cooling effect. The expansion valve is a device that adjusts the refrigerant supply.

[0003] Patent document (CN104566882A) discloses an automotive air conditioning pipe with an expansion valve, including an intake hose, a liquid hard pipe and an expansion valve for connecting the two. However, since the intake hose and the liquid hard pipe are completely independent of each other, the overall installation size is relatively large. However, the installation scenarios of some car models have strict requirements on the installation size, requiring a smaller installation size.

[0004] Therefore, there is a need for an air conditioning piping system with an integrated expansion valve that has a smaller local installation size and is suitable for smaller installation spaces. Summary of the Invention

[0005] The main objective of this application is to provide an air conditioning pipeline with an integrated expansion valve. The integrated expansion valve air conditioning pipeline includes a pipeline assembly, a flange assembly, and an electromagnetic expansion valve. The pipeline assembly includes a high-pressure pipe and a low-pressure pipe. The high-pressure pipe includes a first high-pressure pipe, an outer sleeve, a second high-pressure pipe, a third high-pressure pipe, a first high-pressure hose, a fourth high-pressure pipe, and a second high-pressure hose. The low-pressure pipe includes a first low-pressure pipe, a second low-pressure pipe, a first low-pressure hose, a third low-pressure pipe, and a second low-pressure hose. The outer sleeve is fitted over the first low-pressure pipe, and both ends of the outer sleeve are connected to the first and second high-pressure pipes. One end of the third high-pressure pipe is connected to the second high-pressure pipe. Both ends of the first high-pressure hose are connected to the second high-pressure pipe. One end of the tube opposite to the outer sleeve is connected to the fourth high-pressure tube, and both ends of the first low-pressure hose are connected to the first low-pressure tube and the third low-pressure tube, respectively; the flange assembly includes a first flange, and both ends of the first flange are connected to the end of the third high-pressure tube opposite to the second high-pressure tube and the second low-pressure tube, respectively; the electromagnetic expansion valve has two inlets and two outlets, the two inlets are connected to the end of the fourth high-pressure tube opposite to the first high-pressure hose and the end of the third low-pressure tube opposite to the first low-pressure hose, respectively, and the two outlets are connected to the second high-pressure hose and the second low-pressure hose, respectively. By having the outer sleeve fitted over the outside of the first low-pressure tube, the advantages of smaller local installation size and suitability for smaller installation spaces are achieved.

[0006] Another objective of this application is to provide an air conditioning pipeline with an integrated expansion valve, wherein the flange assembly further includes two second flanges and a third flange, the fourth high-pressure pipe and the third low-pressure pipe are detachably connected to the electromagnetic expansion valve through the second flanges, and the second high-pressure hose and the second low-pressure hose are detachably connected to the electromagnetic expansion valve through the third flange, thereby facilitating the replacement of the electromagnetic expansion valve.

[0007] To achieve at least one of the above-mentioned objectives, this application provides an air conditioning pipe with an integrated expansion valve, wherein the air conditioning pipe with the integrated expansion valve includes:

[0008] A piping assembly, comprising a high-pressure pipe and a low-pressure pipe, wherein the high-pressure pipe comprises a first high-pressure pipe, an outer sleeve, a second high-pressure pipe, a third high-pressure pipe, a first high-pressure hose, a fourth high-pressure pipe, and a second high-pressure hose; and the low-pressure pipe comprises a first low-pressure pipe, a second low-pressure pipe, a first low-pressure hose, a third low-pressure pipe, and a second low-pressure hose. The outer sleeve is fitted over the outside of the first low-pressure pipe, and both ends of the outer sleeve are connected to the first high-pressure pipe and the second high-pressure pipe. One end of the third high-pressure pipe is connected to the second high-pressure pipe. Both ends of the first high-pressure hose are connected to the end of the second high-pressure pipe opposite to the outer sleeve and the fourth high-pressure pipe, respectively. Both ends of the first low-pressure hose are connected to the first low-pressure pipe and the third low-pressure pipe, respectively.

[0009] A flange assembly, the flange assembly including a first flange, the two ends of the first flange being connected to the end of the third high-pressure pipe opposite to the second high-pressure pipe and the second low-pressure pipe, respectively;

[0010] The electromagnetic expansion valve has two inlets and two outlets. The two inlets are respectively connected to the end of the fourth high-pressure pipe opposite to the first high-pressure hose and the end of the third low-pressure pipe opposite to the first low-pressure hose. The two outlets are respectively connected to the second high-pressure hose and the second low-pressure hose.

[0011] In one or more embodiments of this application, the diameter of the second low-pressure hose is larger than the diameter of the second high-pressure hose.

[0012] In one or more embodiments of this application, the flange assembly further includes two second flanges and a third flange, the fourth high-pressure pipe and the third low-pressure pipe are detachably connected to the electromagnetic expansion valve through the second flange, and the second high-pressure hose and the second low-pressure hose are detachably connected to the electromagnetic expansion valve through the third flange.

[0013] In one or more embodiments of this application, the electromagnetic expansion valve has a first connection hole and a second connection hole on both sides, and both second flanges have an insertion portion, an extension portion and a first flow channel. The first flow channel extends from one end of the second flange away from the insertion portion to the end face of the insertion portion. Each extension portion has a third connection hole. The third flange has a second flow channel and a fourth connection hole. The extension portions of the two second flanges are stacked in the height direction, and the third connection holes and the first connection holes on the two second flanges are coaxially arranged. The two ends of the first flow channel on one second flange are respectively connected to the fourth high-pressure pipe and one of the inlets on the electromagnetic expansion valve. The two ends of the first flow channel on the other second flange are respectively connected to the third low-pressure pipe and another inlet on the electromagnetic expansion valve. The fourth connection hole is directly opposite the second connection hole, and one end of each second flow channel is connected to the outlet of the electromagnetic expansion valve. The other end of the second flow channel is connected to the second high-pressure hose and the second low-pressure hose.

[0014] In one or more embodiments of this application, the first high-voltage tube has a sensor connector.

[0015] In one or more embodiments of this application, the ends of the first high-pressure tube and the first low-pressure tube opposite to the first low-pressure hose each have a filling valve interface.

[0016] In one or more embodiments of this application, the air conditioning pipeline of the integrated expansion valve includes two pieces, each piece having a connecting part and two curved parts. The two ends of the connecting part are respectively connected to the two curved parts. The connecting part has a fifth connecting hole. The two pieces are connected by bolts, and the two curved parts respectively clamp the ends of the first low-pressure pipe and the second high-pressure pipe near the first high-pressure hose.

[0017] In one or more embodiments of this application, the air conditioning pipeline of the integrated expansion valve includes two connecting sleeves, each of which has a sixth connecting hole. One end of the connecting sleeve opposite to the sixth connecting hole is sleeved on the end of the first low-pressure pipe opposite to the first low-pressure hose, and the other end of the connecting sleeve opposite to the sixth connecting hole is sleeved on the outer sleeve.

[0018] In one or more embodiments of this application, each of the connecting sleeves has a buffer sleeve between it and the piping assembly.

[0019] In this embodiment, the air conditioning piping with an integrated expansion valve includes a piping assembly, a flange assembly, and an electromagnetic expansion valve. The piping assembly includes a high-pressure pipe and a low-pressure pipe. The high-pressure pipe includes a first high-pressure pipe, an outer sleeve, a second high-pressure pipe, a third high-pressure pipe, a first high-pressure hose, a fourth high-pressure pipe, and a second high-pressure hose. The low-pressure pipe includes a first low-pressure pipe, a second low-pressure pipe, a first low-pressure hose, a third low-pressure pipe, and a second low-pressure hose. The outer sleeve is fitted over the first low-pressure pipe, and both ends of the outer sleeve are connected to the first and second high-pressure pipes. One end of the third high-pressure pipe is connected to the second high-pressure pipe. Both ends of the first high-pressure hose are opposite to the second high-pressure pipe. One end of the outer sleeve is connected to the fourth high-pressure pipe, and both ends of the first low-pressure hose are connected to the first low-pressure pipe and the third low-pressure pipe, respectively. The flange assembly includes a first flange, and both ends of the first flange are connected to the end of the third high-pressure pipe away from the second high-pressure pipe and the second low-pressure pipe, respectively. The electromagnetic expansion valve has two inlets and two outlets. The two inlets are connected to the end of the fourth high-pressure pipe away from the first high-pressure hose and the end of the third low-pressure pipe away from the first low-pressure hose, respectively. The two outlets are connected to the second high-pressure hose and the second low-pressure hose, respectively. By having the outer sleeve fitted over the outside of the first low-pressure pipe, the advantages of smaller local installation size and suitability for smaller installation spaces are achieved. Attached Figure Description

[0020] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 The figure shows a structural schematic diagram of an air conditioning pipeline with an integrated expansion valve according to this application;

[0022] Figure 2 The diagram illustrates the structure of an electromagnetic expansion valve.

[0023] Figure 3 The figure shows a cross-sectional view of the outer sleeve fitted onto the first low-pressure pipe;

[0024] Figure 4 The diagram illustrates the structure of the outer sleeve being fitted onto the first low-pressure pipe.

[0025] Figure 5 The diagram shows a schematic of the electromagnetic expansion valve.

[0026] Figure 6 The diagram shows the structure of the second flange;

[0027] Figure 7 The diagram illustrates the structure of the sheet. Detailed Implementation

[0028] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0029] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0030] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0032] An illustration of an air conditioning piping system with an integrated expansion valve, for reference. Figures 1 to 7 An air conditioning pipeline with an integrated expansion valve according to a preferred embodiment of the present invention includes a pipeline assembly 10, a flange assembly 20 and an electromagnetic expansion valve 30.

[0033] Specifically, such as Figure 1 As shown, the piping assembly 10 includes a high-pressure pipe 101 and a low-pressure pipe 102. The high-pressure pipe 101 includes a first high-pressure pipe 1011, an outer sleeve 1012, a second high-pressure pipe 1013, a third high-pressure pipe 1014, a first high-pressure hose 1015, a fourth high-pressure pipe 1016, and a second high-pressure hose 1017. The low-pressure pipe 102 includes a first low-pressure pipe 1021, a second low-pressure pipe 1022, a first low-pressure hose 1023, a third low-pressure pipe 1024, and a second low-pressure hose 1025. (Refer to...) Figure 1 , Figure 3 and Figure 4The outer sleeve 1012 is sleeved on the outside of the first low-pressure tube 1021. Both ends of the outer sleeve 1012 are connected to the first high-pressure tube 1011 and the second high-pressure tube 1013. One end of the third high-pressure tube 1014 is connected to the second high-pressure tube 1013. Both ends of the first high-pressure hose 1015 are connected to the end of the second high-pressure tube 1013 away from the outer sleeve 1012 and the fourth high-pressure tube 1016, respectively. Both ends of the first low-pressure hose 1023 are connected to the first low-pressure tube 1021 and the third low-pressure tube 1024, respectively.

[0034] In addition, such as Figure 1 As shown, the flange assembly 20 includes a first flange 201, and the two ends of the first flange 201 are respectively connected to the end of the third high-pressure pipe 1014 away from the second high-pressure pipe 1013 and the second low-pressure pipe 1022.

[0035] In addition, such as Figure 2 As shown, the electromagnetic expansion valve 30 has two inlets 301 and two outlets 302. The two inlets 301 are respectively connected to the end of the fourth high-pressure pipe 1016 away from the first high-pressure hose 1015 and the end of the third low-pressure pipe 1024 away from the first low-pressure hose 1023. The two outlets 302 are respectively connected to the second high-pressure hose 1017 and the second low-pressure hose 1025.

[0036] It should be noted that the annular cavity between the inner wall of the outer sleeve 1012 and the outer wall of the first low-pressure pipe 1021 constitutes the channel for the liquid refrigerant to flow in. Furthermore, both ends of the outer sleeve 1012 are reduced in diameter and welded to the outer wall of the first low-pressure pipe 1021, thus sealing both ends of the outer sleeve 1012. Additionally, the end of the first high-pressure pipe 1011 opposite to the outer sleeve 1012 is connected to the condenser on the vehicle, and the first flange 201 is connected to the cooling module of the vehicle battery. During operation, the liquid refrigerant flows in from the first high-pressure pipe 1011, then flows along the first high-pressure pipe 1011 into the annular cavity between the inner wall of the outer sleeve 1012 and the outer wall of the first low-pressure pipe 1021, and subsequently flows into the second high-pressure pipe 1013. Subsequently, a portion of the liquid refrigerant flows along the second high-pressure pipe 1013 to the first high-pressure hose 1015, and then sequentially flows through the fourth high-pressure pipe 1016, the electromagnetic expansion valve 30, and the second high-pressure hose 1017. Another portion of the liquid refrigerant flows along the third high-pressure pipe 1014 to the cooling module of the external automotive battery connected to the first flange 201. Additionally, the overall gaseous refrigerant flows along the first low-pressure pipe 1021 to the first low-pressure hose 1023, and then through the third low-pressure pipe 1024, the electromagnetic expansion valve 30, and the second low-pressure hose 1025. A portion of the gaseous refrigerant flowing along the first low-pressure pipe 1021 flows along the second low-pressure pipe 1022 to the cooling module of the external automotive battery connected to the first flange 201.

[0037] It should also be noted that by fitting the outer sleeve 1012 onto the outside of the first low-pressure pipe 1021, the overall space size in the local area is reduced, adapting to the installation situation of narrow local space in certain vehicle models. Furthermore, by setting the first high-pressure hose 1015, the second high-pressure hose 1017, the first low-pressure hose 1023, and the second low-pressure hose 1025, vibration reduction in high-vibration areas is achieved. Additionally, the electromagnetic expansion valve 30 is an integrated device combining the functions of an expansion valve and a solenoid valve. Compared to the prior art where the expansion valve and solenoid valve are connected to the pipeline separately, it has fewer components and is simpler to assemble. Since the electromagnetic expansion valve 30 is a mature technology, its specific structure and model will not be described in detail here. The electromagnetic expansion valve 30 includes, but is not limited to, the small-sized electromagnetic expansion valve 30 disclosed in patent document (CN207034338U) used in air conditioning pipelines and featuring an integrated expansion valve and solenoid valve. Furthermore, the third high-pressure pipe 1014 and the second low-pressure pipe 1022 are used to cool the external battery. It is evident that, compared to existing technologies, this application has the advantages of smaller local installation size, suitability for smaller installation spaces, better local vibration damping effect, and simpler assembly due to the application of electromagnetic expansion valve 30.

[0038] Furthermore, to prevent assemblers from reversing the direction during actual installation, this application incorporates a foolproof design at the end, specifically, as follows: Figure 1 As shown, the diameter of the second low-pressure hose 1025 is larger than the diameter of the second high-pressure hose 1017, so that the assembly personnel can accurately connect the pipes.

[0039] Furthermore, when the electromagnetic expansion valve 30 malfunctions, to facilitate replacement of the electromagnetic expansion valve 30, such as... Figure 5 As shown, the flange assembly 20 also includes two second flanges 202 and a third flange 203. The fourth high-pressure pipe 1016 and the third low-pressure pipe 1024 are detachably connected to the electromagnetic expansion valve 30 through the second flanges 202. The second high-pressure hose 1017 and the second low-pressure hose 1025 are detachably connected to the electromagnetic expansion valve 30 through the third flange 203.

[0040] Specifically, to achieve the aforementioned detachable connection, such as Figure 2 As shown, the electromagnetic expansion valve 30 has a first connecting hole 303 and a second connecting hole 304 on both sides, as follows: Figure 6As shown, both second flanges 202 have an insertion portion 2021, an extension portion 2022, and a first flow channel 2023. The first flow channel 2023 extends from one end of the second flange 202 away from the insertion portion 2021 to the end face of the insertion portion 2021. Each extension portion 2022 has a third connecting hole 2024. The third flange 203 has a second flow channel and a fourth connecting hole. The extension portions 2022 of the two second flanges 202 are stacked in the height direction, and the third connecting holes 2024 and the first connecting holes 2023 on the two second flanges 202 are coaxially arranged. The two ends of the first flow channel 2023 on the second flange 202 are respectively connected to the fourth high-pressure pipe 1016 and one of the inlets 301 on the electromagnetic expansion valve 30. The two ends of the first flow channel 2023 on the other second flange 202 are respectively connected to the third low-pressure pipe 1024 and another inlet 301 on the electromagnetic expansion valve 30. The fourth connecting hole is directly opposite the second connecting hole 304, and one end of the second flow channel is connected to the outlet 302 of the electromagnetic expansion valve 30. The other end of the second flow channel is respectively connected to the second high-pressure hose 1017 and the second low-pressure hose 1025.

[0041] Furthermore, in this application, as Figure 1 As shown, the first high-pressure pipe 1011 has a sensor connector 10111 to facilitate the subsequent installation of a pressure sensor on the first high-pressure pipe 1011.

[0042] In addition, such as Figure 1 As shown, the first high-pressure tube 1011 and the first low-pressure tube 1021 each have a filling valve interface 10112 at the end opposite to the first low-pressure hose 1023, so as to facilitate the subsequent installation of the filling valve.

[0043] Furthermore, to achieve a predetermined distance between the high-pressure pipe and the low-pressure pipe, preventing them from colliding with each other under vibration, such as... Figure 7 As shown, the air conditioning pipeline of the integrated expansion valve includes two pieces 40. Each piece 40 has a connecting part 401 and two curved parts 402. The two ends of the connecting part 401 are respectively connected to the two curved parts 402. The connecting part 401 has a fifth connecting hole 4011. The two pieces 40 are connected by bolts, and the two curved parts 402 respectively clamp the end of the first low-pressure pipe 1021 and the second high-pressure pipe 1013 near the first high-pressure hose 1015.

[0044] It should be noted that during installation, the two plates 40 are respectively located on both sides of the pipeline assembly 10, and the curved part 402 is made to fit against the side wall of the corresponding high-pressure pipe 101 or low-pressure pipe 102. Then, the bolt is inserted into the fifth connecting hole 4011 and tightened with the nut, so that the two curved parts 402 respectively clamp the end of the first low-pressure pipe 1021 and the second high-pressure pipe 1013 near the first high-pressure hose 1015.

[0045] In addition, to facilitate the connection of the high-pressure pipe 101 and the low-pressure pipe 102 to the external vehicle body, such as Figure 1 As shown, the air conditioning pipeline of the integrated expansion valve includes two connecting sleeves 50, each of which has a sixth connecting hole 501. One end of one connecting sleeve 50 away from the sixth connecting hole 501 is sleeved on the end of the first low-pressure pipe 1021 away from the first low-pressure hose 1023, and the other end of the connecting sleeve 50 away from the sixth connecting hole 501 is sleeved on the outer sleeve 1012.

[0046] It should be noted that the sixth connecting hole 501 is used to connect to the external body bolts.

[0047] In addition, to reduce the impact of vehicle body vibration on the piping assembly 10, such as Figure 1 As shown, each of the connecting sleeves 50 and the pipeline assembly 10 has a buffer sleeve 502.

[0048] In summary, the air conditioning piping with the integrated expansion valve described in the embodiments of this application is explained, which provides advantages such as smaller local installation size and suitability for smaller installation spaces.

[0049] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. An air conditioning pipeline with an integrated expansion valve, characterized in that: The air conditioning piping of the integrated expansion valve includes A piping assembly, comprising a high-pressure pipe and a low-pressure pipe, wherein the high-pressure pipe comprises a first high-pressure pipe, an outer sleeve, a second high-pressure pipe, a third high-pressure pipe, a first high-pressure hose, a fourth high-pressure pipe, and a second high-pressure hose; and the low-pressure pipe comprises a first low-pressure pipe, a second low-pressure pipe, a first low-pressure hose, a third low-pressure pipe, and a second low-pressure hose. The outer sleeve is fitted over the outside of the first low-pressure pipe, and both ends of the outer sleeve are connected to the first high-pressure pipe and the second high-pressure pipe. One end of the third high-pressure pipe is connected to the second high-pressure pipe. Both ends of the first high-pressure hose are connected to the end of the second high-pressure pipe opposite to the outer sleeve and the fourth high-pressure pipe, respectively. Both ends of the first low-pressure hose are connected to the first low-pressure pipe and the third low-pressure pipe, respectively. A flange assembly, the flange assembly including a first flange, the two ends of the first flange being connected to the end of the third high-pressure pipe opposite to the second high-pressure pipe and the second low-pressure pipe, respectively; The electromagnetic expansion valve has two inlets and two outlets. The two inlets are respectively connected to the end of the fourth high-pressure pipe opposite to the first high-pressure hose and the end of the third low-pressure pipe opposite to the first low-pressure hose. The two outlets are respectively connected to the second high-pressure hose and the second low-pressure hose.

2. The air conditioning pipeline with an integrated expansion valve according to claim 1, characterized in that: The diameter of the second low-pressure hose is larger than the diameter of the second high-pressure hose.

3. The air conditioning pipeline with an integrated expansion valve according to claim 2, characterized in that: The flange assembly also includes two second flanges and a third flange. The fourth high-pressure pipe and the third low-pressure pipe are detachably connected to the electromagnetic expansion valve through the second flanges. The second high-pressure hose and the second low-pressure hose are detachably connected to the electromagnetic expansion valve through the third flanges.

4. The air conditioning pipeline with an integrated expansion valve according to claim 3, characterized in that: The electromagnetic expansion valve has a first connection hole and a second connection hole on each side. Both second flanges have an insertion portion, an extension portion, and a first flow channel. The first flow channel extends from one end of the second flange away from the insertion portion to the end face of the insertion portion. Each extension portion has a third connection hole. The third flange has a second flow channel and a fourth connection hole. The extension portions of the two second flanges are stacked in the height direction, and the third connection holes and the first connection holes on the two second flanges are coaxially arranged. The two ends of the first flow channel on one second flange are respectively connected to the fourth high-pressure pipe and one of the inlets of the electromagnetic expansion valve. The two ends of the first flow channel on the other second flange are respectively connected to the third low-pressure pipe and another inlet of the electromagnetic expansion valve. The fourth connection hole is directly opposite the second connection hole, and one end of the second flow channel is connected to the outlet of the electromagnetic expansion valve. The other end of the second flow channel is connected to the second high-pressure hose and the second low-pressure hose.

5. The air conditioning pipeline with an integrated expansion valve according to claim 4, characterized in that: The first high-voltage tube has a sensor connector.

6. The air conditioning pipeline with an integrated expansion valve according to claim 5, characterized in that: Both the first high-pressure tube and the first low-pressure tube have a filling valve interface at the end opposite to the first low-pressure hose.

7. The air conditioning pipeline with an integrated expansion valve according to claim 6, characterized in that: The air conditioning pipe of the integrated expansion valve includes two pieces, each piece having a connecting part and two bends. The two ends of the connecting part are respectively connected to the two bends. The connecting part has a fifth connecting hole. The two pieces are connected by bolts, and the two bends respectively clamp the ends of the first low-pressure pipe and the second high-pressure pipe near the first high-pressure hose.

8. The air conditioning pipeline with an integrated expansion valve according to claim 7, characterized in that: The air conditioning pipe of the integrated expansion valve includes two connecting sleeves, each of which has a sixth connecting hole. One end of the connecting sleeve opposite to the sixth connecting hole is sleeved on the end of the first low-pressure pipe opposite to the first low-pressure hose, and the other end of the connecting sleeve opposite to the sixth connecting hole is sleeved on the outer sleeve.

9. The air conditioning pipeline with an integrated expansion valve according to claim 8, characterized in that: Each of the connecting sleeves has a buffer sleeve between it and the piping assembly.

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